Palo Alto Networks PAN-OS: cross-site scripting
Low1.3CVE-2026-0279 · Published Jul 9, 2026 · updated Aug 11, 2026
Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) service, GlobalProtect™ gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS® software enables a malicious unauthenticated user to store or execute malicious JavaScript payload. The security risk posed by this issue is minimized when the management interface and access to the User-ID™ Authentication Portal is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 . This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW is not affected by this vulnerability.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| PAN-OS Product | >= 12.1.0, < 12.1.8 | 12.1.8 |
| >= 11.2.0, < 11.2.13 | 11.2.13 | |
| >= 11.1.0, < 11.1.16 | 11.1.16 | |
| >= 10.2.0, < 10.2.18-h8 | 10.2.18-h8 | |
| Prisma Access Product | >= 12.1.0, < 12.1.8 | 12.1.8 |
| <= 11.2.0 | No fix yet | |
| <= 10.2.0 | No fix yet |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Amber
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-79
More Palo Alto Networks advisories
All Palo Alto Networks| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 9 | Palo Alto Networks Prisma Browser: privilege escalation | Low2.0 | 150.33.2.46 |
| Jul 9 | Palo Alto Networks Cortex XDR Broker VM: privilege escalation | Low1.1 | 31.0.58 |
| Jul 9 | Palo Alto Networks Prisma Access Agent: improper certificate validation | Medium5.7 | 26.2.1 |
| Jul 9 | Palo Alto Networks Prisma: local user could bypass DLP policy enforcement... | Medium5.8 | 26.2.1 |
| Jul 9 | Palo Alto Networks PAN-OS: command injection | Medium6.0 | 12.1.8+3 more |
| Jul 9 | Palo Alto Networks Cloud NGFW: denial of service | Medium6.6 | 12.1.4-h8+5 more |